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Service Replacement Turbochargers

SB - 214 - 019 ( 7/9/04 )

The following charts outline the recommended service replacement turbochargers.  To provide the most durable product available,  it is mandatory that the recommended replacement turbocharger be used.  Unless the recommended replacement turbocharger is the same part number as the failed turbocharger,  it is not acceptable to simply install the same part number as the failed turbocharger.   Mack Trucks,  Inc.  is making every effort to stock the following recommended replacement turbocharger part number in the parts system, and it is requested that these turbochargers be used as replacements.

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Before replacing a turbocharger following a turbocharger failure,  the air induction system MUST be cleaned of ANY and ALL debris as outlined in SB - 214 - 015.  Also,  when installing the replacement turbocharger,   the turbocharger oil feed line must be cleaned and the new turbocharger must be pre-lubed as outlined in               SB - 214 - 020.

 

E-Tech Pre-CCRS Engines

Pre-CCRS Engines Use Fuel Return Line...Search For 243AX6F In Your Chassis Record. If Your Truck Shows Having This Then You Have A Pre-CCRS Engine

Recommended Service Replacement Turbocharger Part # Engine Application Turbocharger Being Replaced

( May Be With Or Without an "X" At The End Of The Part Number )

631GC5173MX E-TECH  E7-427 AND E7-460 631GC5145M

631GC5145AM

631GC5153M

631GC5153AM2X E-TECH  E7-300   E7-350  E7-400  E7-310/330  E7-330/350  E7-355/380 631GC5144M2

631GC5144AM2

631GC5144M5

631GC5144AM5

631GC5153M2

631GC5153AM2

631GC5153AM3X E-TECH  EM7-275   EM7-300 631GC5144M3

631GC5144AM3

631GC5144M6

631GC5144AM6

631GC5153M3

631GC5153AM3

631GC5153AM5X E-TECH E7-300   E7-350  E7-400  E7-310/330  E7-330/350  E7-355/380 631GC5144M

631GC5144AM

631GC5144M4

631GC5144AM4

631GC5153AM5

 


 

E-Tech CCRS Engines

CCRS Engines Do Not Use Fuel Return Line

Recommended Service Replacement Turbocharger Part # Engine Application  

Turbocharger Being Replaced

( May Be With Or Without an "X" At The End Of The Part Number )

631GC5173M8X *

( Wastegate Turbo With Improved Actuator )

Available Approximately January 2004

E-TECH  E7-460 631GC5163M

631GC5163M5

631GC5173M5

631GC5173M8

( Wastegate Turbo )

631GC5173M4X E-TECH  E7-427   E7-350   E7-400  E7-355/380  E7-380/410 631GC5153M4
631GC5153AM2X E-TECH  E7-300   E7-350  EM7-300  EM7-275  E7-310/330  E7-330/350 E7-355/380 631GC5164M

631GC5164M2

*  For Wastegate turbochargers that have experienced a wastegate diaphragm failure, DO NOT replace the turbocharger.  A failed wastegate actuator assembly must be replaced with actuator kit part No. 7536 -174307. Kit part No. 7536-174307 includes an improved actuator, and replaces the original actuator kit part No. 7536-173566 effective December 2003.

ASET™ Engines

To determine the proper replacement turbocharger, find the engine model and part number for the turbocharger being replaced. Then, staying within the same row, use the replacement turbocharger part number for the particular chassis model being serviced as given in the Replacement Turbocharger column.

All turbochargers for ASET™ AC engines have the same turbine housing-to-center bearing housing orientation. The only difference in turbochargers for the two chassis models (CX and CH) is the compressor orientation. The ASET™ AC replacement turbochargers within any given boxed-in area of the Service Replacement column of the chart can be substituted for each other by simply re-orienting the compressor cover (refer to the section under the heading "Compressor Cover Reorientation"). It is acceptable to re-orient an ASET™ AC replacement turbocharger if the turbocharger for a particular chassis model is not available.

 

ASET™ AC Engines

Service Replacement Turbocharger Part No. Application Turbocharger Being Replaced (may be with or without an "X" at the end of the part No.)
631GC5171MX for CH and CHN models

631GC5171M2X for CX models

ASET™ AC-380/410, AC-400, AC-427 and AC-460E and AC-460P 631GC5166M*

631GC5166M4*

631GC5171M

631GC5171M2

631GC5171MX** or 631GC5171M2X** for CXN models ASET™ AC-380/410, AC-400, AC-427 and AC-460E and AC-460P 63GC5171M

63GC5171M2

631GC5171M7*

631GC5176M3X for CH and CHN models

631GC5176M4X for CX models

631GC5176M10X for CXN models

ASET™ AC-380/410, AC-400, AC-427 and AC-460 engines 631GC5176M3

631GC5176M4

631GC5176M10

631GC5171M3X for CH and CHN models

631GC5171M4X for CX models

ASET™ AC-355/380 engines 631GC5166M*

631GC5166M4*

631GC5171M3

631GC5171M4

631GC5171M3X** or 631GC5171M4X** for CXN models ASET™ AC-355/380 engines 631GC5171M3

631GC5171M4

631GC5171M8*

631GC5176M5X for CH and CHN models

631GC5176M6X for CX models

631GC5176M11X for CXN models

ASET™ AC-355/380 engines 631GC5176M5

631GC5176M6

631GC5176M11

631GC5171M5X for CH and CHN models

631GC5171M6X for CX models

ASET™ AC-310/330, AC-330/350 and AC-350

631GC5166M*

631GC5166M4*

631GC5171M3

631GC5171M4

631GC5171M5

631GC5171M6

631GC5171M5X** or 631GC5171M6X** for CXN models

ASET™ AC-310/330, AC-330/350 and AC-350

631GC5171M5

631GC5171M6

631GC5171M9*

631GC5176M7X for CH and CHN models

631GC5176M8X for CX models

631GC5176M12X for CXN models

ASET™ AC-310/330, AC-330/350 and AC-350

631GC5176M7

631GC5176M8

631GC5176M12

* These turbocharger part numbers are no longer available and must be serviced with the part numbers given in the "Service Replacement Turbocharger Part No." column. Reorientation of the compressor cover may be required.

** Compressor cover reorientation will be required


Compressor Cover Reorientation — ASET™ AC Engines

The following groups of turbochargers are the same except for compressor cover orientation.

If required, the above turbochargers can be substituted for each other by re-orienting the compressor cover. This is done by removing the VTG position sensor connector and mounting bracket, loosening the compressor cover V-band clamp and then rotating the compressor cover to the desired position. Be sure that the compressor cover is properly seated (not "cocked"), and then tighten the band clamp retaining nut to 90 lb-ft (10.2 N•m). Install the wire routing clamp onto the band clamp bolt, then install the retaining washer and nut. Tighten the wire clamp retaining nut to 48 lb-ft (5.4 N•m). Take care not to pinch the wires in the clamp. When tightening the clamp retaining nut, ensure that the clamp remains vertical and that the wires do not contact the compressor cover, bearing housing or turbine housing. Reinstall the VTG position sensor connector mounting plate to the three mounting bosses on the outboard side of the compressor cover.

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Incorrect wire routing will result in premature failure.


 

ASET™ AI and AMI Engines

ASET™ AI/AMI turbochargers have different turbine housing to compressor housing orientations for MR and LE chassis models as compared to all other chassis models. Some of these turbochargers can be re-oriented to substitute for the equivalent turbocharger that differs only by orientation, but these must be determined on a case-by-case basis.

Service Replacement Turbocharger Part No.

Application

Turbocharger Being Replaced (may be with or without an "X" at the end of the part No.)

631GC5170MX for CV, RB and RD models

631GC5170AM8X for MR models

ASET™ AI-460 engines

631GC5170M7

631GC5170AM7

631GC5170M8

631GC5170AM8

631GC5172M5X for CV, RB, RD and DM models

631GC5172M6X for MR models

ASET™ AI-460 engines (prior to October 2003, with Boost pressure Relief Valve [BRV])

631GC5172M5

631GC5172M6

631GC5172M3X for CV, RB, RD and DM models

631GC5172M4X for MR models

ASET™ AI-460 engines (October 2003 and later, without BRV)

631GC5172M3

631GC5172M4

631GC5170AMX for CV, RB and RD models

ASET™ AI-427 engines

631GC5170M

631GC5170AM

631GC5172M7X for CV, RB, RD and DM models

631GC5172M8X for MR models

ASET™ AI-427 engines (prior to October 2003, with BRV)

631GC5172M7

631GC5172M8

631GC5172M5X for CV, RB and RD models

631GC5172M6X for MR models

ASET™ AI-427 engines (October 2003–December 2003 and later, without BRV)

631GC5172M5

631GC5172M6

631GC5172M3X for CV, RB, RD and DM models

631GC5172M4X for MR models

ASET™ AI-427 (with redesigned front end having AC-style water pump, January 2004 and later)

631GC5172M3

631GC5172M4

631GC5172M5X for CV, RB, RD and DM models

631GC5172M6X for MR models

ASET™ AI-370

631GC5172M5

631GC5172M6

631GC5170AM2X for CV, RB and RD models

631GC5170AM5X for MR and LE models

ASET™ AI-300A, AMI-300, AMI-335, AMI-370, AI-350 and AI-400 engines

631GC5170M2

631GC5170AM2

631GC5170M5

631GC5170AM5

631GC5172M7X for CV, RB, RD and DM models

631GC5172M8X for MR and LE models

ASET™ AI-300A, AMI-300, AMI-335, AI-350 and AI-400 engines

631GC5172M7

631GC5172M8

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